Pioneer Species and Primary Succession Quiz

What was the state of the area around Mount Saint Helens immediately after the eruption?

• It was bustling with animal activity.

• It was covered in water.

• It was destroyed and lifeless.

• It was full of new plant life.

What is the process called when a new community of life begins to grow on exposed rock without soil?

• Primary succession

• Tertiary succession

• Secondary succession

• Quaternary succession

Which organisms are typically the first to grow on rocks during primary succession?

• Trees and shrubs

• Lichens and mosses

• Grasses and flowers

• Birds and mammals

How do lichens contribute to soil formation on rocks?

• They attract insects that create soil.

• They provide shade for other plants.

• They release acids that break down rocks.

• They absorb water from the air.

What role do pioneer species play in the development of a new ecosystem?

• They only grow in already fertile soil.

• They prevent other species from growing.

• They are the first to grow and help create soil.

• They consume all available resources.